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| author | Vladimir Marko <vmarko@google.com> | 2015-11-20 15:08:11 +0000 |
|---|---|---|
| committer | Vladimir Marko <vmarko@google.com> | 2015-11-20 16:18:39 +0000 |
| commit | f9d741e32c6f1629ce70eefc68d3363fa1cfd696 (patch) | |
| tree | 409005e5b1d01d2830c20421f8466125e110d6af /compiler/optimizing/graph_visualizer.cc | |
| parent | beb709a2607a00b5df33f0235f22ccdd876cee22 (diff) | |
Optimizing/ARM: Improve long shifts by 1.
Implement long
Shl(x,1) as LSLS+ADC,
Shr(x,1) as ASR+RRX and
UShr(x,1) as LSR+RRX.
Remove the simplification substituting Shl(x,1) with
ADD(x,x) as it interferes with some other optimizations
instead of helping them. And since it didn't help 64-bit
architectures anyway, codegen is the correct place for it.
This is now implemented for ARM and x86, so only mips32 can
be improved.
Change-Id: Idd14f23292198b2260189e1497ca5411b21743b3
Diffstat (limited to 'compiler/optimizing/graph_visualizer.cc')
0 files changed, 0 insertions, 0 deletions